fix(miniprogram): put workbench user actions on full-width row below title

Co-authored-by: Cursor <cursoragent@cursor.com>

miniprogram/styles/sq-nav-header.scss

@@ -13,11 +13,11 @@
   box-sizing: border-box;
 }
 
-/* 工作台等：加高，容纳标题+副文案+右侧用户 */
+/* 工作台等：加高，标题行 + 独立用户行 */
 .sq-nav-header--tall {
   height: auto;
   min-height: calc(var(--sq-header-height, 88px) + 72px);
-  padding-bottom: 28px;
+  padding-bottom: 20px;
 }
 
 .sq-nav-header__nav {
@@ -84,14 +84,24 @@
   text-align: left;
 }
 
+/* 用户行：与标题分行；全宽右对齐，不预留胶囊列 */
+.sq-nav-header__user-row {
+  display: flex;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  box-sizing: border-box;
+  padding: 12px 16px 0;
+}
+
 .sq-nav-header__user {
   display: flex;
-  flex-direction: column;
-  align-items: flex-end;
-  justify-content: center;
-  gap: 8px;
+  flex-direction: row;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 10px;
   flex-shrink: 0;
-  max-width: 42%;
+  max-width: 100%;
   text-align: right;
   margin-left: auto;
 }